Arrange the following in increasing order of basicity Phenol, O-nitrophenol, cresol

Explanation

To arrange the compounds phenol, ortho-nitrophenol, and cresol in increasing order of basicity, we need to consider the effects of substituents on the phenolic structure.

### Step-by-Step Solution:

1. **Identify the Compounds**: We have three compounds to consider:
- Phenol (C6H5OH)
- Ortho-nitrophenol (C6H4(NO2)OH)
- Cresol (C6H4(CH3)OH)
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